"Locker space" refers to the area or storage compartments provided in lockers for people to keep their belongings or personal items safely. Full definition
Mine was full of luggage from other seats which did not have overhead locker space. (seatguru.com)
If you are only taking an overnight bag or a bag to hit in an overhead locker space is crucial so your travel hair dryer should be as space efficient as possible. (theboutiqueadventurer.com)
Despite the large number of new arrivals already competing for locker space at Rush Green it has done nothing to dampen the ever increasing number of names to be linked with a move to the East End. (westhamway.net)